Embedment properties of thermally modified spruce timber with dowel-type fasteners

van Blokland, Joran (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology

Florisson, Sara (author): Luleå tekniska universitet,Träteknik,Luleå University of Technology, Sweden

Schweigler, Michael (author): Linnéuniversitetet,Institutionen för byggteknik (BY),Department of Building Technology, Linnaeus University, Växjö, Sweden

Ekevid, Torbjörn (author): Volvo Construction Equipment, Gothenburg, Sweden,Volvo Construct Equipment, Sweden

Bader, Thomas K., 1980- (author): Linnéuniversitetet,Institutionen för byggteknik (BY),Department of Building Technology, Linnaeus University, Växjö, Sweden

Adamopoulos, Stergios (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology

(creator_code:org_t)

Elsevier, 2021
2021
English.
In: Construction and Building Materials. - : Elsevier. - 0950-0618 .- 1879-0526. ; 313

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Abstract Subject headings

This study investigates the effect of thermal modification, ThermoWood Thermo-D treatment versus no treatment, on the embedment properties of Norway spruce timber (Picea abies [L.] Karst.) with dowel-type fasteners. The test specimens were reinforced to prevent splitting of the wood. The influence of density, load direction, test specimen configuration (full hole versus half hole), moisture content, gauge points and calculation method were also evaluated. Thermal modification primarily affected the embedment strength parallel to the grain, which was ∼ 25% higher after thermal modification, mainly due to the change in physical properties because of the treatment, i.e. the lower equilibrium moisture content. The influence of the investigated parameters on embedment properties of thermally modified spruce followed similar trends as for unmodified spruce. It was for example seen that the density–embedment strength relationships still hold after the treatment despite the decrease in density and the increase in embedment strength parallel to the grain. However, after thermal modification, the influence of load direction on embedment strength was ∼30% larger and the influence of calculation method (yield versus ultimate strength) on embedment strength perpendicular to the grain was ∼10% smaller.

LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Trävetenskap (hsv//swe)
AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Wood Science (hsv//eng)

By the author/editor: van Blokland, Jo ...; Florisson, Sara; Schweigler, Mich ...; Ekevid, Torbjörn; Bader, Thomas K. ...; Adamopoulos, Ste ...

About the subject

AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agriculture Fore ...; and Wood Science

By the university: Luleå University of Technology; Linnaeus University; Swedish University of Agricultural Sciences

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